Crutches for 6 weeks. Most meniscal repair surgeries, whether done open or arthroscopically, require up to 6 weeks of limited weight bearing with crutches. Most surgeons allow at least the weight of the foot to touch the ground during that time. Physical therapy is geared at working on quadriceps function/strength and limited knee motion from 0-90 degrees. Bracing in extension for ambulation may be indicated as well.
Meniscus repair. After meniscus repair, recovery can often approach 3-4 months. After meniscus resection (removal) the recovery is much shorter (6-8 weeks). Find out which of the two procedures you had done - they are very different.